Carbon-coated vanadium selenide as anode for lithium-ion batteries and sodium-ion batteries with enhanced electrochemical performance

Abstract A Carbon-coated vanadium selenium composites were synthesized through a facile ball-milling method. The VSe 2 /C presents a structure that carbon layer covers around the pure VSe 2 particles. The VSe 2 /C exhibits outstanding performances in electrochemical tests, showing an enhanced cycle capacities of 467 mA h g −1 for sodium-ion batteries and 453 mA h g −1 for lithium-ion batteries after 50 discharge-charge cycles.